BRDF and BSDF models for diffuse surface and bulk scatter from transparent windows

A novel approach based on the generalized Van Cittert-Zernike theorem is used to characterize the scatter properties of window materials and coated surfaces. The scattered light is categorized based on the level of coherence of the scattered light. A closed form model is applied to a wide range of illumination frequencies and material types. Diffuse scattered light is represented in a straightforward manner. Comparisons between measurements and model fits will be presented.